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S44700 Stainless Steel vs. 3203 Aluminum

S44700 stainless steel belongs to the iron alloys classification, while 3203 aluminum belongs to the aluminum alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is S44700 stainless steel and the bottom bar is 3203 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
70
Elongation at Break, % 23
4.5 to 29
Fatigue Strength, MPa 300
46 to 92
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 82
26
Shear Strength, MPa 380
72 to 120
Tensile Strength: Ultimate (UTS), MPa 600
110 to 200
Tensile Strength: Yield (Proof), MPa 450
39 to 190

Thermal Properties

Latent Heat of Fusion, J/g 300
400
Maximum Temperature: Mechanical, °C 1100
180
Melting Completion (Liquidus), °C 1460
650
Melting Onset (Solidus), °C 1410
620
Specific Heat Capacity, J/kg-K 480
900
Thermal Expansion, µm/m-K 11
23

Otherwise Unclassified Properties

Base Metal Price, % relative 18
9.0
Density, g/cm3 7.8
2.8
Embodied Carbon, kg CO2/kg material 3.6
8.1
Embodied Energy, MJ/kg 49
150
Embodied Water, L/kg 180
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
8.0 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 480
11 to 250
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 21
11 to 20
Strength to Weight: Bending, points 20
19 to 28
Thermal Shock Resistance, points 19
4.9 to 8.8

Alloy Composition

Aluminum (Al), % 0
96.9 to 99
Carbon (C), % 0 to 0.010
0
Chromium (Cr), % 28 to 30
0
Copper (Cu), % 0 to 0.15
0 to 0.050
Iron (Fe), % 64.9 to 68.5
0 to 0.7
Manganese (Mn), % 0 to 0.3
1.0 to 1.5
Molybdenum (Mo), % 3.5 to 4.2
0
Nickel (Ni), % 0 to 0.15
0
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.2
0 to 0.6
Sulfur (S), % 0 to 0.020
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15